Fixed homepage vs home_page

Well-known member

There are currently two different phrases called "home_page" and "homepage", and the only difference they have is a single whitespace. "home_page" is used in most cases, but "homepage" is being used in a template called "message_user_info". I think there is no need to have two separate phrases and the way of writing "Homepage" or "Home page" should be unified. Moreover, this should be unified in other phrases as well, just make a language search for both of terms.